JP3896408B2

JP3896408B2 - Pulse photometry probe

Info

Publication number: JP3896408B2
Application number: JP2002316000A
Authority: JP
Inventors: 啓一杉浦; 前田　　徹
Original assignee: Nihon Kohden Corp
Current assignee: Nihon Kohden Corp
Priority date: 2001-11-28
Filing date: 2002-10-30
Publication date: 2007-03-22
Anticipated expiration: 2022-10-30
Also published as: JP2003225215A

Description

【０００１】
【発明の属する技術分野】
本発明は、パルスフォトメトリー方式により脈波ないし血中吸光物質を測定するためのプローブに関する。
【０００２】
【従来の技術】
従来のパルスフォトメトリー方式に用いるプローブにおいて、光源および光センサは指に巻回する支持構造の内部に埋設固定され、支持構造の下部表面に接着層を有する。そして、その接着層を生体組織の表面に装着することにより、光源および光センサの生体組織に対する固定、プローブ自体の固定がなされる（例えば、特許文献１、特許文献２参照）。
また、従来のパルスフォトメトリー方式に用いるプローブは、柔軟部材の生体組織に接触する面に発光部、受光部が配置され、取付けストラップを用いて生体組織に巻回して装着する（例えば、特許文献３参照）。
【０００３】
【特許文献１】
特公平２−２０２５２号公報
【特許文献２】
米国特許第４８３００１４号明細書
【特許文献３】
米国特許第５９１９１３３号明細書
【０００４】
【発明が解決しようとする課題】
しかし、皮膚がまだ弱い未熟児や新生児の指等に、特許文献１（特許文献２）に記載されるような支持構造の接着層を有するプローブを使用したのでは、装着部位の皮脂や角質層と接触することにより、接着層が劣化して、接着力が弱くなるほか、装着による局所的な圧迫を与えるおそれがある。さらには、接着層が角質層を剥離させてしまうおそれがある。
また、特許文献３に記載されるようなプローブは、固い発光部、受光部が直接生体組織に触れて圧迫してしまう。また、発光部と受光部の間にはつなぎ（ヨーク）があるので、発光部・受光部間の距離が調整できず、指等の生体組織を発光部と受光部で挟んだ状態での光軸の調整ができない。さらに、柔軟性の異なる圧縮性部材と受光部・発光部のハウジングが生体組織に接触する構造となっているので、生体組織に巻回して装着した状態で、外部から圧力が加わると全面に均一化された圧力分散となりにくい。
本発明は、上記問題点を解決するためになされたものであり、その目的は、皮膚が弱い患者に装着しても、装着による極所的な圧迫による壊死、発赤、炎症を生じさせず圧力が分散されるプローブを提供することである。
【０００５】
【課題を解決するための手段】
本発明に係るパルスフォトメトリープローブは、請求項１に記載したように、
生体組織に発光するための発光部と、
前記発光部により発光され前記生体組織を透過した光を受光するための受光部と、
前記発光部および前記受光部が取り付けられ、前記生体組織に巻回して装着するための圧縮性を有する装着テープ部と、
前記装着テープ部が前記生体組織に巻回されて装着された状態を維持するための留め部とを具備し、
前記装着テープ部は、前記発光部から発光される光を通すための第１の孔と、前記発光部により発光され前記生体組織を透過した光を通し前記受光部により受光させるための第２の孔を有し、
前記発光部は前記第１の孔に発光する光を通すように、かつ前記装着テープ部の生体組織に接触しない表面上に着脱可能に取り付けられ、
前記受光部は前記第２の孔から受光するように、かつ前記装着テープ部の生体組織に接触しない表面上に着脱可能に取り付けられているパルスフォトメトリープローブにおいて、
前記装着テープ部は、前記発光部および前記受光部が取り付けられる位置に、前記発光部および前記受光部を着脱可能に取り付けるためのテープがそれぞれ貼付されており、
前記テープは、前記装着テープ部が平らな状態にあって前記テープに前記発光部および前記受光部が所定の状態に取り付けられたときに、前記発光部および前記受光部それぞれのリード線の基端部の向きが互いに６０°から１２０°の角度をなすように形成され配置されていることを特徴とする。
【００１６】
さらに、本発明に係るパルスフォトメトリープローブは、請求項２に記載したように、前記装着テープに貼付される前記面状ファスナのフック部またはループ部は、前記装着テープ部が平らな状態にあって前記面状ファスナの前記フック部またはループ部に前記発光部および前記受光部が所定の状態に取り付けられたときに、前記発光部および前記受光部それぞれのリード線の基端部の向きが互いに６０°から１２０°の角度をなすように形成され配置されていることを特徴とする。
【００１７】
さらに、本発明に係るパルスフォトメトリープローブは、請求項３に記載したように、前記圧縮性部材は、スポンジであることを特徴とする。
【００１８】
さらに、本発明に係るパルスフォトメトリープローブは、請求項４に記載したように、前記装着テープ部の生体組織に接触される側の面から、前記第１の孔および前記第２の孔が、光透過性シートによりシールされていることを特徴とする。
【００１９】
あるいは、本発明に係るパルスフォトメトリープローブは、請求項５に記載したように、
生体組織に発光するための発光部と、
前記発光部により発光され前記生体組織を透過した光を受光するための受光部と、
前記発光部および前記受光部が取り付けられ、前記生体組織に巻回して装着するための圧縮性を有する装着テープ部と、
前記装着テープ部が前記生体組織に巻回されて装着された状態を維持するための留め部とを具備し、
前記装着テープ部は、圧縮性部材と片面が接着面を有するカバーテープからなり、
前記カバーテープの前記接着面は、前記圧縮部材と接着する面と、前記装着テープ部の生体組織に接触しない表面に装着することで前記留め部となる面を有し、
前記カバーテープは、前記発光部から発光される光を通すための第１の孔と、前記発光部により発光され前記生体組織を透過した光を通し前記受光部により受光させるための第２の孔を有し、
前記発光部は前記第１の孔に発光する光を通すように、かつ前記カバーテープの前記圧縮性部材に接着されない表面上に着脱可能に取り付けられ、
前記受光部は前記第２の孔から受光するように、かつ前記カバーテープの前記圧縮性部材に接着されない表面上に着脱可能に取り付けられ、
前記発光部から発せられた光が前記生体組織を透過し前記受光部に至るまでに透過する前記圧縮性部材の部分は少なくとも、光透過性を有することを特徴とする。
【００２０】
さらに、本発明に係るパルスフォトメトリープローブは、請求項６に記載したように、請求項５に係る構成において、前記装着テープ部は、前記発光部および前記受光部を取り付けるための粘着面を有し、
前記発光部および前記受光部の少なくとも前記粘着面に取り付けられる面はパイル地であることを特徴とする。
【００２１】
【発明の実施の形態】
以下、本発明に係るパルスフォトメトリープローブの第１の実施の形態を、図面を参照しながら詳細に説明する。
【００２２】
図１は、本実施の形態に係るパルスフォトメトリープローブの外観を示す図である。図１に示すように、パルスフォトメトリープローブは大きくわけて測定素子部２０と装着テープ部３０に分けられる。
【００２３】
［測定素子部２０］
測定素子部２０は、光を発するための発光部１（ＬＥＤ等）と、その発光部１から発せられ生体組織を透過した光を受光するための受光部２（フォトダイオード等）と、発光部１へ発光駆動信号を送り受光部２から受光信号を装置本体（図示しない）に送信するためのＹ字ケーブル３と、装置本体に取り付けるためのコネクタ４からなる。Ｙ字ケーブル３は発光部１と受光部２へそれぞれ接続される２本のリード線からなる。
発光部１と受光部２を一体にせず、それぞれ分けられた測定部とすることで、ケーブル径を細く柔軟にできる。また、発光部１、受光部２との間の距離は固定されていない。
【００２４】
［装着テープ部３０］
次に図２、図３を用いて、装着テープ部３０について説明する。
装着テープ部３０は、生体組織（指、足等）に直接巻回される圧縮性を有するスポンジ５と、片面が接着面１０でスポンジ５と接着されるカバーテープ９とを有する。カバーテープ９の接着面１０は、スポンジ５と接着する面と、スポンジ５に接着しない面とがある。スポンジ５に接着しない面は、装着テープ部３０を生体組織に巻回して装着する際に、カバーテープ９の表面に接着されて、装着状態を維持するための留め部としての役割を果たす。なお、生体組織への装着前は、スポンジ５に接着しない接着面は剥離紙１２によりカバーされている。
なお、スポンジ５に接着しないカバーテープ９の接着面は、その代わりに、面状ファスナ等を用いても良い。
また、カバーテープ９の材料は、伸縮性のあるバンテージや、収縮性のない紙テープであってもよい。好適には、カバーテープ９の材料は、粘着剤が塗布された不織布伸縮テープがよい。
さらに、生体組織に直接接触する部材がスポンジ５のみであるため、生体組織表面の凹凸にも柔軟に接触できて密着性がよく、生体組織にかかる圧力を分散される。
【００２５】
さらに、装着テープ部３０は発光部１から発光される光を通すための第１の孔１３と、発光部１により発光され生体組織を透過した光を通し受光部２により受光させるための第２の孔１４が設けられている。
また、発光部１は、第１の孔１３を通して光が発光できるように、カバーテープ９の上面に着脱可能に取り付けられるようになっている。受光部２は、第２の孔１４を通して光が受光できるように、カバーテープ９の上面に着脱可能に取り付けられるようになっている。その構造は、遮光性を有し第１の孔１３、第２の孔１４とほぼ同じ大きさの孔が設けられた黒色の円環状の両面テープ８がそれぞれ、第１の孔と第２の孔に同心軸上に貼付されていることにより着脱可能となっている。
ここで、カバーテープ９に設けられた第１の孔１３と第２の孔１４を構成する孔１３Ａと１４Ａは、スポンジ５に設けられた第１の孔１３と第２の孔１４を構成する孔１３Ｂと１４Ｂよりも大きく形成されており、スポンジ５とカバーテープ９の間に設けられる両面テープ８の粘着面がその孔１３Ａ，１４Ａから現れるようになっている。発光部１および受光部２はそれぞれ孔１３Ａ，１４Ａから現れる両面テープ８の粘着面に接着されて取り付けられるようになっている。
なお、発光部１、受光部２が装着テープ部３０に取り付けられる前では、その両面テープ８の表面に現れた部分には剥離紙１１が貼付されている。そして、発光部１と受光部２を装着テープ部３０に取り付ける際、剥離紙を剥がし、発光部１、受光部２を両面テープ８に取り付ける。
このような構造のため、発光部１、受光部２などの測定素子は、患者の生体組織（皮膚）に直接接触しないように装着テープ部３０の背面（生体組織と接する面と反対の面）の測定素子を装着する部分に固定されることになる。
さらに、発光部１、受光部２の間の距離は固定的ではないので、第１の孔１３あるいは第２の孔１４を楕円状等にすることで、装着テープ部３０に取り付ける際、発光部１、受光部２の間の距離を調節するようにすることもできる。それによりプローブ装着時の発光部１と受光部２のそれぞれの光軸を対向させるように微調整することもできる。あるいは、第１の孔１３と第２の孔１４の距離が異なる装着テープ部３０を複数個用意しておき、患者の生体組織（指等）の大きさに応じて、適切な装着テープ部３０を選択するようにしてもよい。
【００２６】
また、装着テープ部３０が生体組織に巻回されて装着されている状態のときに、発光部１と受光部２からの生体組織への圧力を分散させるために、プレート６が、第１の孔と第２の孔に同心軸上であって、両面テープ８よりも、生体組織接触面寄りに設けられている。本実施の形態では第１の孔１３、第２の孔１４と同じ大きさの孔を有する円環状であるが、透明なプレートであれば円盤状であってもよい。なお、プレート６の生体組織接触面寄りの面は両面テープ７が貼付され、スポンジ５に貼付されるようになっている。
プレート６は、発光部１、受光部２の取付表面よりも大きい表面を持たせることにより、スポンジ５の持つ緩衝作用とあいまって生体組織表面（皮膚）に対する圧力を分散することができる。特に、発光部１、受光部２のエッジ部分に生じうる局所的圧迫もこのプレート６とスポンジ５によって防止することができる。なお、本実施の形態では各部品の接着に両面テープを用いたが、熱溶着等によってもよい。
また、プレートの材料は、ＡＢＳ、ＰＥＴでもよく、塩化ビニールであってもよい。
【００２７】
また、上記実施の形態では、円環状の粘着両面テープ８に光透過性の無い黒色粘着テープを用いているが、カバーテープ９、円環状の粘着両面テープ８、円環状プレート６、スポンジ５のいずれかについて、遮光性のものを用いることにより、測定誤差の原因となる外来光を遮断することができる。
【００２８】
図１に示すように本実施の形態では、装着テープ部３０の第１の孔１３と第２の孔１４との間に、３つの孔を装着テープ部３０の幅方向に設けている。これは装着テープ部３０を患者に装着する際に曲げやすくするためである。
【００２９】
［装着方法・使用方法］
次に装着方法について説明する。
装着テープ部３０の測定素子装着部に発光部１および受光部２を取り付け固定する。発光部１と受光部２とを、それぞれが患者の測定部位（指、足等）を間にして対向するように配置させ、装着テープ部３０を生体組織に巻回する。ここで、指に、剥離紙１２を剥離させながら装着する様子を図４に示す。また、足の甲に発光部１を、その対向する足裏に受光部２を配置して装着しようとする様子を図５（ａ）に示す。
さらに装着テープ部３０の端部にある留め部である粘着面１０を巻回したカバーテープ９の背面に接着させることでプローブ全体を装着し固定することができる。図５（ｂ）は足に装着しようとする様子を示す図である。
巻回の強さは、装着部位より遠位の生体組織（皮膚の色など）、あるいはプローブにより検出される測定脈波波形等によって加減する。
発光部１と受光部２は測定素子装着部に固定されているが、巻回される装着テープ部３０が発光部１と受光部２の背面を覆うのに十分な長さをすることにより、発光部１と受光部２の離脱を防止することができる。
なお、使用方法としては、装着テープ部３０をディスポーザブルとして使用し、測定素子部２０を再利用することで、コスト的に効率のよい利用が可能である。
【００３０】
図６は、第２の実施の形態を示す図である。本実施の形態は、上記第１の実施の形態のプローブにおいて、発光部１、受光部２を装着テープ部３０に取り付けるために、面状ファスナ４０を用いたものである。すなわち、粘着両面テープ８のカバーテープ９側の面に、面状ファスナ４０のフック部４０Ａを貼付け、発光部１および受光部２の表面に面状ファスナ４０のループ部４０Ｂを貼付けたものである。
【００３１】
ここで、発光部１または受光部２の構成を図７の断面図に示し、外観を図８に示す。これらの図に示すように、発光素子または受光素子４１は、２つのシートで覆われている。すなわち、光透過面を有する側は透明なシート４２で覆われ、その反対側は遮光性を有するシート４４で覆われている。これらのシート４２、４４としては例えば塩化ビニールシートを用い、それらの周辺を高周波溶着により接着する。また、これら２つのシート４２、４４の外側表面全体は、面状ファスナ４０のループ部４０Ｂが貼付けられている。発光素子または受光素子４１の発光面または受光面４１ａは、光を遮らないようにループ部４０Ｂに窓部４３が設けられている。本プローブの他の構成は、上述した実施の形態のプローブと同じである。
【００３２】
本プローブはこのように面状ファスナ４０を用いているので、装着テープ部３０に対し発光部１および受光部２を繰り返し着脱しても、その着脱は確実に行うことができる。
このように、本実施の形態では、発光部１および受光部２の表面にループ部４０Ｂを設け、装着テープ３０側にフック部４０Ａを設けたが、これらフック部４０Ａとループ部４０Ｂを逆にしても良い。ただし、ループ部４０Ｂの方が感触が良いので、作業者が良く触れる発光部１および受光部２の方にループ部４０Ｂを設けた方が作業者には好ましい。
【００３３】
図９は、第３の実施の形態を示す図である。本実施の形態は、上記第１の実施の形態のプローブにおいて、カバーテープ９に設けられた孔１３Ａと１４Ａをその長径方向が互いに６０°から１２０°となるように配置したものである。すなわち、両面テープ８のカバーテープ９から露出した粘着面は、装着テープ部３０が平らな状態にあって両面テープ８に前記発光部および前記受光部が所定の状態に取り付けられたときに、発光部１および受光部２それぞれのリード線の基端部の向きが互いに６０°から１２０°の角度をなすように形成され配置されている。他の構成は第１の実施の形態と同じである。
このような構成により、本プローブが患者に装着され、孔１３Ａと１４Ａから現れた両面テープ８の粘着面に発光部１と受光部２が最もよく接着する状態に取り付けられると、すなわち、接着する面が最も大きくなる状態に取り付けられると、図１０に示すように、発光部１と受光部２それぞれのリード線の基端部Ｌ１，Ｌ２は引き出しやすい状態になり、このプローブの装着作業が容易となる。図１０は患者の足に本プローブを装着する様子を示したものである。
【００３４】
上記第３の実施の形態は、第１の実施の形態において、カバーテープ９に設けられた孔１３Ａと１４Ａをその長径方向が互いに６０°から１２０°となるように配置したものであったが、これは、第２の実施の形態において、同様にカバーテープ９に設けられた孔１３Ａと１４Ａをその長径方向が互いに６０°から１２０°となるように配置したものであっても良い。この場合は、リード線の引き出しやすさを備えると共に、発光部１および受光部２の着脱の確実性も向上する。
【００３５】
図１１は第４の実施の形態を示す図である。本実施の形態は、上記第３の実施の形態において、スポンジ５の生体に接触する側面から孔１３Ｂ、１４Ｂを、２枚の光透過性シート１５、１５（サージカルテープ、フィルム等がよい）によりそれぞれシールする。
この透過性シート１５をシールするのは、プローブを生体組織に装着した場合に、スポンジ５に設けた孔１３Ｂ、１４Ｂのエッジ部分が接触した生体組織部分が過度の圧迫により壊死するおそれを防止するためである。
光透過性シート１５の適正な材質の例としては、厚みが０．３〜０．４ｍｍ程度のポリウレタンエストラマを挙げることができる。光透過性シート１５の片面に粘着剤を薄く塗布し、スポンジ５にシールするとよい。
図１２は、その断面図である。図１２のように、孔１３、１４は光透過性シート１５によりシートされる。
【００３６】
なお、光透過性シート１５は、２つに分けられたものでなくともよく、図１３に示すように、スポンジ５に設けた孔１３Ｂ、１４Ｂを同時にシールするのに十分な大きさの１つのものであってもよい。
【００３７】
図１４は第５の実施の形態を示す図である。本実施の形態は、上記第３の実施の形態において、孔１３Ｂ、１４Ｂを設けず、その代わりに、スポンジ５を薄くし、スポンジ５の多孔性により光透過性を持たせることを特徴とするものである。
これも第４の実施の形態と同じく、スポンジ５に孔のエッジを形成させないようにするためのものである。
スポンジ５の適正な材質の例としては、軟性ウレタンフォームを挙げることができる。スポンジの多孔性は、光透過性を持たせるために、２５ｍｍに孔（セル）が５０〜６０個程度あれば十分である。
また、少なくとも光が透過する部分のスポンジ５の厚みは１〜２ｍｍ程度がよい。その他の部分のスポンジ５の厚みは、同じ厚みの１〜２ｍｍ程度でもよく、それより厚くしてもよい。
図１５は、その断面図である。図１５のように、光が透過する部分のスポンジ５の厚みは薄いものとされる。
このような構成にすることで、プローブを装着して測定する際に、発光部１から発せられた光が生体組織を透過し受光部２に至るまでに透過するスポンジ５の部分は少なくとも、光透過性を有することになる。
【００３８】
なお、上記の第１〜第５の実施の態様において、発光部１および受光部２には少なくとも装着テープ９に接触する面は、光が通る部分を除き、面状ファスナのようなパイル地とし、粘着両面テープ８のカバーテープ９側の面は面状ファスナを設けないようにしてもよい。この場合、双方が面状ファスナであるよりも、装着テープ９から露出しているテープ８からの発光部１および受光部２の剥離強度は弱いものとなる。そのため、軽い適度な力で発光部１および受光部２を装着テープ９から剥離することができる。
【００３９】
【発明の効果】
以上詳記したように、請求項１に係るパルスフォトメトリープローブの発明は、
生体組織に発光するための発光部と、
前記発光部により発光され前記生体組織を透過した光を受光するための受光部と、
前記発光部および前記受光部が取り付けられ、前記生体組織に巻回して装着するための圧縮性を有する装着テープ部と、
前記装着テープ部が前記生体組織に巻回されて装着された状態を維持するための留め部とを具備し、
前記装着テープ部は、前記発光部から発光される光を通すための第１の孔と、前記発光部により発光され前記生体組織を透過した光を通し前記受光部により受光させるための第２の孔を有し、
前記発光部は前記第１の孔に発光する光を通すように、かつ前記装着テープ部の生体組織に接触しない表面上に着脱可能に取り付けられ、
前記受光部は前記第２の孔から受光するように、かつ前記装着テープ部の生体組織に接触しない表面上に着脱可能に取り付けられているパルスフォトメトリープローブにおいて、
前記装着テープ部は、前記発光部および前記受光部が取り付けられる位置に、前記発光部および前記受光部を着脱可能に取り付けるためのテープがそれぞれ貼付されており、
前記テープは、前記装着テープ部が平らな状態にあって前記テープに前記発光部および前記受光部が所定の状態に取り付けられたときに、前記発光部および前記受光部それぞれのリード線の基端部の向きが互いに６０°から１２０°の角度をなすように形成され配置されていることを特徴とする。
このことにより、装着テープ部の生体組織に接触する面は接着層がないため、何度プローブを生体組織に着脱しても、生体組織との接触による装着力の減少はない。また、発光部および受光部は生体組織に直接接触することがなく、装着テープ部が圧縮性を有するため、装着状態下で生体組織への局所的圧迫を防ぎ圧力を分散させることができる。
さらに、本プローブを被験者に装着したときに、前記発光部および前記受光部それぞれのリード線を容易に引き出すことができる。
【００５０】
さらに、請求項２に係るパルスフォトメトリープローブの発明は、
前記装着テープに貼付される前記面状ファスナのフック部またはループ部は、前記装着テープ部が平らな状態にあって前記面状ファスナの前記フック部またはループ部に前記発光部および前記受光部が所定の状態に取り付けられたときに、前記発光部および前記受光部それぞれのリード線の基端部の向きが互いに６０°から１２０°の角度をなすように形成され配置されていることを特徴とする。
これにより、本プローブを被験者に装着したときに、前記発光部および前記受光部それぞれのリード線を容易に引き出すことができる。
【００５１】
さらに、請求項３に係るパルスフォトメトリープローブの発明は、
前記圧縮性部材は、スポンジであることを特徴とする。
このことにより、生体組織に接触するものがスポンジであるため、何度プローブを生体組織に着脱しても、生体組織との接触による装着力の減少は生じない。
またスポンジの圧縮性により、装着状態下での生体組織への局所的圧迫を防ぐごとができる。
【００５２】
さらに、請求項４に係るパルスフォトメトリープローブの発明は、
前記装着テープ部の生体組織に接触される側の面から、前記第１の孔および前記第２の孔が、光透過性シートによりシールされていることを特徴とする。
このことにより、プローブを生体組織に装着した場合に、装着テープ部に設けた孔のエッジ部分に接触する生体組織部分が過度の圧迫により壊死するのを防止することができる。
【００５３】
さらに、請求項５に係るパルスフォトメトリープローブの発明は、
生体組織に発光するための発光部と、
前記発光部により発光され前記生体組織を透過した光を受光するための受光部と、
前記発光部および前記受光部が取り付けられ、前記生体組織に巻回して装着するための圧縮性を有する装着テープ部と、
前記装着テープ部が前記生体組織に巻回されて装着された状態を維持するための留め部とを具備し、
前記装着テープ部は、圧縮性部材と片面が接着面を有するカバーテープからなり、
前記カバーテープの前記接着面は、前記圧縮部材と接着する面と、前記装着テープ部の生体組織に接触しない表面に装着することで前記留め部となる面を有し、
前記カバーテープは、前記発光部から発光される光を通すための第１の孔と、前記発光部により発光され前記生体組織を透過した光を通し前記受光部により受光させるための第２の孔を有し、
前記発光部は前記第１の孔に発光する光を通すように、かつ前記カバーテープの前記圧縮性部材に接着されない表面上に着脱可能に取り付けられ、
前記受光部は前記第２の孔から受光するように、かつ前記カバーテープの前記圧縮性部材に接着されない表面上に着脱可能に取り付けられ、
前記発光部から発せられた光が前記生体組織を透過し前記受光部に至るまでに透過する前記圧縮性部材の部分は少なくとも、光透過性を有することを特徴とする。
これにより、プローブを生体組織に装着した場合に、装着テープ部に設けた孔のエッジ部分に接触する生体組織部分が過度の圧迫により壊死するのを防止することができると共に、プローブの部品点数を少なくすることができる。
【００５４】
さらに、請求項６に係るパルスフォトメトリープローブの発明は、
請求項５の構成において、
前記装着テープ部は、前記発光部および前記受光部を取り付けるための粘着面を有し、前記発光部および前記受光部の少なくとも前記粘着面に取り付けられる面はパイル地であることを特徴とする。
これにより、軽い適度な力で発光部および受光部を装着テープ部から剥離することができる。
【図面の簡単な説明】
【図１】第１の実施の形態に係るパルスフォトメトリープローブの外観を示す図である。
【図２】第１の実施の形態に係るパルスフォトメトリープローブの装着テープ部の分解図を示す図である。
【図３】第１の実施の形態に係るパルスフォトメトリープローブの装着テープ部の断面図を示す図である。
【図４】第１の実施の形態に係るパルスフォトメトリープローブを指に装着する様子を示す図である。
【図５】第１の実施の形態に係るパルスフォトメトリープローブを足に装着する様子を示す図である。
【図６】第２の実施の形態に係るパルスフォトメトリープローブの分解図を示す図である。
【図７】第２の実施の形態に係るパルスフォトメトリープローブの発光部または受光部の断面図を示す図である。
【図８】第２の実施の形態に係るパルスフォトメトリープローブの発光部または受光部の外観を示す図である。
【図９】第３の実施の形態に係るパルスフォトメトリープローブの分解図を示す図である。
【図１０】第３の実施の形態に係るパルスフォトメトリープローブを足に装着する様子を示す図である。
【図１１】第４の実施の形態に係るパルスフォトメトリープローブの分解図を示す図である。
【図１２】第４の実施の形態に係るパルスフォトメトリープローブの装着テープ部の断面図を示す図である。
【図１３】第４の実施の形態に係る他のパルスフォトメトリープローブの分解図を示す図である。
【図１４】第５の実施の形態に係るパルスフォトメトリープローブの分解図を示す図である。
【図１５】第５の実施の形態に係るパルスフォトメトリープローブの装着テープ部の断面図を示す図である。
【符号の説明】
１発光部
２受光部
３Ｙ字ケーブル
４コネクタ
５、５Ｂスポンジ
６プレート
７両面テープ
８両面テープ
９カバーテープ
１０接着面
１１剥離紙
１２剥離紙
１３第１の孔
１４第２の孔
１５光透過性シート
２０測定素子部
３０装着テープ部
４０面状ファスナ[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a probe for measuring a pulse wave or a light-absorbing substance in blood by a pulse photometry method.
[0002]
[Prior art]
In a probe used in a conventional pulse photometry method, a light source and an optical sensor are embedded and fixed in a support structure wound around a finger, and have an adhesive layer on a lower surface of the support structure. Then, by attaching the adhesive layer to the surface of the living tissue, the light source and the optical sensor are fixed to the living tissue, and the probe itself is fixed (see, for example, Patent Document 1 and Patent Document 2).
Further, a probe used in a conventional pulse photometry method has a light emitting unit and a light receiving unit arranged on a surface of a flexible member that comes into contact with a living tissue, and is wound around the living tissue using an attachment strap (see, for example, Patent Documents). 3).
[0003]
[Patent Document 1]
Japanese Patent Publication No. 2-20252 [Patent Document 2]
US Pat. No. 4,834,014 [Patent Document 3]
US Pat. No. 5,919,133
[Problems to be solved by the invention]
However, when a probe having an adhesive layer with a support structure as described in Patent Document 1 (Patent Document 2) is used on fingers of premature babies and newborns whose skin is still weak, sebum and stratum corneum at the attachment site are used. Contact with the adhesive layer deteriorates the adhesive layer, weakens the adhesive force, and may cause local compression by wearing. Furthermore, there exists a possibility that an adhesive layer may peel a stratum corneum.
Further, in the probe described in Patent Document 3, a hard light-emitting part and a light-receiving part directly touch a living tissue and are compressed. In addition, since there is a connection (yoke) between the light emitting unit and the light receiving unit, the distance between the light emitting unit and the light receiving unit cannot be adjusted, and light in a state where a living tissue such as a finger is sandwiched between the light emitting unit and the light receiving unit. The axis cannot be adjusted. Furthermore, the compressible member with different flexibility and the housing of the light-receiving unit / light-emitting unit are in contact with the living tissue, so that when the external pressure is applied while wound around the living tissue, the entire surface is uniform. It is hard to become the pressure dispersion that became.
The present invention has been made in order to solve the above-mentioned problems, and its purpose is to provide pressure without causing necrosis, redness, and inflammation due to extreme compression by wearing even when the skin is weak. Is to provide a distributed probe.
[0005]
[Means for Solving the Problems]
The pulse photometry probe according to the present invention, as described in claim 1,
A light emitting unit for emitting light to a living tissue;
A light receiving unit for receiving light emitted from the light emitting unit and transmitted through the living tissue;
A mounting tape unit having the compressibility for winding and mounting on the living tissue, wherein the light emitting unit and the light receiving unit are attached;
A fastening portion for maintaining the state where the mounting tape portion is wound around and attached to the living tissue;
The mounting tape portion includes a first hole for allowing light emitted from the light emitting portion to pass through, and a second hole for allowing light received by the light emitting portion and transmitted through the living tissue to be received by the light receiving portion. Have holes,
The light emitting part is detachably attached on the surface of the mounting tape part that does not come into contact with the living tissue so as to transmit light emitted through the first hole.
In the pulse photometry probe, wherein the light receiving unit receives light from the second hole and is detachably attached to the surface of the mounting tape unit that does not contact the living tissue ,
The mounting tape part has a tape for attaching the light emitting part and the light receiving part detachably to the position where the light emitting part and the light receiving part are attached,
The tape has a base end of a lead wire of each of the light emitting portion and the light receiving portion when the mounting tape portion is flat and the light emitting portion and the light receiving portion are attached to the tape in a predetermined state. The portions are formed and arranged so that the directions of the portions form an angle of 60 ° to 120 ° with respect to each other .
[0016]
Further, in the pulse photometry probe according to the present invention, as described in claim 2 , the hook portion or the loop portion of the planar fastener attached to the mounting tape is in a state where the mounting tape portion is flat. When the light emitting part and the light receiving part are attached to the hook part or loop part of the planar fastener in a predetermined state, the directions of the proximal ends of the lead wires of the light emitting part and the light receiving part are mutually It is formed and arranged to form an angle of 60 ° to 120 °.
[0017]
Furthermore, the pulse photometry probe according to the present invention is characterized in that, as described in claim 3 , the compressible member is a sponge.
[0018]
Furthermore, as described in claim 4 , the pulse photometry probe according to the present invention has the first hole and the second hole from the surface of the mounting tape portion that contacts the living tissue, It is sealed with a light transmissive sheet.
[0019]
Alternatively, the pulse photometry probe according to the present invention, as described in claim 5 ,
A light emitting unit for emitting light to a living tissue;
A light receiving unit for receiving light emitted from the light emitting unit and transmitted through the living tissue;
A mounting tape unit having the compressibility for winding and mounting on the living tissue, wherein the light emitting unit and the light receiving unit are attached;
A fastening portion for maintaining the state where the mounting tape portion is wound around and attached to the living tissue;
The mounting tape part is composed of a compressible member and a cover tape having an adhesive surface on one side,
The adhesive surface of the cover tape includes a surface that adheres to the compression member, and a surface that becomes the fastening portion by being attached to a surface that does not contact the living tissue of the attachment tape portion,
The cover tape has a first hole for passing light emitted from the light emitting part and a second hole for receiving light emitted by the light emitting part and transmitted through the living tissue and received by the light receiving part. Have
The light emitting part is detachably attached to a surface of the cover tape that does not adhere to the compressible member so as to transmit light emitted through the first hole,
The light receiving portion is removably attached on the surface of the cover tape that is not bonded to the compressible member so as to receive light from the second hole,
The portion of the compressible member through which the light emitted from the light emitting part passes through the living tissue and reaches the light receiving part is at least light transmissive.
[0020]
Further, the pulse photometry probe according to the present invention, as described in claim 6, Yes in the structure according to claim 5, wherein the mounting tape unit, an adhesive surface for attaching said light emitting portion and the light receiving portion And
The surface attached to at least the adhesive surface of the light emitting unit and the light receiving unit is a pile ground.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a first embodiment of a pulse photometry probe according to the present invention will be described in detail with reference to the drawings.
[0022]
FIG. 1 is a diagram showing an appearance of a pulse photometry probe according to the present embodiment. As shown in FIG. 1, the pulse photometry probe is roughly divided into a measurement element unit 20 and a mounting tape unit 30.
[0023]
[Measurement element unit 20]
The measurement element unit 20 includes a light emitting unit 1 (LED or the like) for emitting light, a light receiving unit 2 (photodiode or the like) for receiving light emitted from the light emitting unit 1 and transmitted through living tissue, and a light emitting unit. 1 comprises a Y-shaped cable 3 for sending a light emission driving signal to the light-receiving unit 2 and transmitting a light-receiving signal from the light-receiving unit 2 to the apparatus main body (not shown), and a connector 4 for attaching to the apparatus main body. The Y-shaped cable 3 is composed of two lead wires connected to the light emitting unit 1 and the light receiving unit 2 respectively.
By making the light emitting unit 1 and the light receiving unit 2 not integrated, but by using separate measurement units, the cable diameter can be made thin and flexible. Further, the distance between the light emitting unit 1 and the light receiving unit 2 is not fixed.
[0024]
[Mounting tape section 30]
Next, the mounting tape unit 30 will be described with reference to FIGS.
The mounting tape unit 30 includes a compressible sponge 5 that is directly wound around a living tissue (finger, foot, etc.), and a cover tape 9 that is bonded to the sponge 5 on one side with an adhesive surface 10. The adhesive surface 10 of the cover tape 9 includes a surface that adheres to the sponge 5 and a surface that does not adhere to the sponge 5. The surface that does not adhere to the sponge 5 is adhered to the surface of the cover tape 9 when the attachment tape portion 30 is wound around the biological tissue and attached, and serves as a fastening portion for maintaining the attachment state. Note that the adhesive surface that does not adhere to the sponge 5 is covered with the release paper 12 before being attached to the living tissue.
Instead of the adhesive surface of the cover tape 9 that does not adhere to the sponge 5, a planar fastener or the like may be used instead.
The material of the cover tape 9 may be a stretchable vantage or a non-shrinkable paper tape. Preferably, the material of the cover tape 9 is a non-woven stretchable tape coated with an adhesive.
Further, since the sponge 5 is the only member that directly contacts the living tissue, it can flexibly contact unevenness on the surface of the living tissue, has good adhesion, and disperses the pressure applied to the living tissue.
[0025]
Further, the mounting tape portion 30 has a first hole 13 for passing light emitted from the light emitting portion 1 and a second hole for allowing the light receiving portion 2 to receive the light emitted from the light emitting portion 1 and transmitted through the living tissue. Holes 14 are provided.
The light emitting unit 1 is detachably attached to the upper surface of the cover tape 9 so that light can be emitted through the first hole 13. The light receiving unit 2 is detachably attached to the upper surface of the cover tape 9 so that light can be received through the second hole 14. The structure is such that a black annular double-sided tape 8 having a light shielding property and having a hole having the same size as that of the first hole 13 and the second hole 14 is formed in the first hole and the second hole, respectively. It is detachable by being attached to the hole on the concentric shaft.
Here, the holes 13A and 14A constituting the first hole 13 and the second hole 14 provided in the cover tape 9 constitute the first hole 13 and the second hole 14 provided in the sponge 5. It is formed larger than the holes 13B and 14B, and the adhesive surface of the double-sided tape 8 provided between the sponge 5 and the cover tape 9 appears from the holes 13A and 14A. The light emitting unit 1 and the light receiving unit 2 are attached to the adhesive surface of the double-sided tape 8 that emerges from the holes 13A and 14A, respectively.
Before the light emitting unit 1 and the light receiving unit 2 are attached to the mounting tape unit 30, the release paper 11 is attached to the portion that appears on the surface of the double-sided tape 8. When the light emitting unit 1 and the light receiving unit 2 are attached to the mounting tape unit 30, the release paper is peeled off, and the light emitting unit 1 and the light receiving unit 2 are attached to the double-sided tape 8.
Due to such a structure, the measurement elements such as the light emitting unit 1 and the light receiving unit 2 are provided on the back surface of the mounting tape unit 30 (the surface opposite to the surface in contact with the living tissue) so as not to directly contact the patient's living tissue (skin). This is fixed to the portion where the measuring element is mounted.
Further, since the distance between the light emitting unit 1 and the light receiving unit 2 is not fixed, the light emitting unit can be attached to the mounting tape unit 30 by making the first hole 13 or the second hole 14 elliptical or the like. 1. The distance between the light receiving units 2 can be adjusted. Thereby, it is possible to finely adjust the optical axes of the light emitting unit 1 and the light receiving unit 2 when the probe is mounted to face each other. Alternatively, a plurality of mounting tape portions 30 having different distances between the first hole 13 and the second hole 14 are prepared, and an appropriate mounting tape portion 30 is selected according to the size of the patient's biological tissue (finger or the like). May be selected.
[0026]
In addition, when the mounting tape unit 30 is wound around the living tissue and mounted, the plate 6 is used to disperse the pressure from the light emitting unit 1 and the light receiving unit 2 to the living tissue. The hole and the second hole are provided on a concentric axis and closer to the living tissue contact surface than the double-sided tape 8. In the present embodiment, it is an annular shape having holes of the same size as the first hole 13 and the second hole 14, but may be a disk shape as long as it is a transparent plate. The surface of the plate 6 near the living tissue contact surface is affixed with a double-sided tape 7 and affixed to the sponge 5.
By providing the plate 6 with a surface larger than the mounting surfaces of the light emitting unit 1 and the light receiving unit 2, it is possible to disperse the pressure on the surface of the living tissue (skin) together with the buffering action of the sponge 5. In particular, this plate 6 and sponge 5 can also prevent local compression that may occur at the edge portions of the light emitting unit 1 and the light receiving unit 2. In the present embodiment, the double-sided tape is used for bonding the components, but thermal welding or the like may be used.
The material of the plate may be ABS, PET, or vinyl chloride.
[0027]
Moreover, in the said embodiment, although the black adhesive tape which does not have light transmittance is used for the cyclic | annular adhesive double-sided tape 8, the cover tape 9, the cyclic | annular adhesive double-sided tape 8, the annular plate 6, and sponge 5 are used. In any case, by using a light-shielding material, it is possible to block external light that causes measurement errors.
[0028]
As shown in FIG. 1, in the present embodiment, three holes are provided in the width direction of the mounting tape portion 30 between the first hole 13 and the second hole 14 of the mounting tape portion 30. This is to make it easier to bend when the mounting tape portion 30 is mounted on the patient.
[0029]
[How to install / use]
Next, a mounting method will be described.
The light emitting unit 1 and the light receiving unit 2 are attached and fixed to the measuring element mounting unit of the mounting tape unit 30. The light emitting unit 1 and the light receiving unit 2 are arranged so as to face each other with a measurement site (finger, foot, etc.) of the patient in between, and the mounting tape unit 30 is wound around the living tissue. Here, a state in which the release paper 12 is attached to the finger while being peeled is shown in FIG. FIG. 5A shows a state in which the light emitting unit 1 is placed on the instep and the light receiving unit 2 is placed on the opposite sole.
Further, the entire probe can be mounted and fixed by adhering it to the back surface of the cover tape 9 around which the adhesive surface 10 that is a fastening portion at the end of the mounting tape portion 30 is wound. FIG.5 (b) is a figure which shows a mode that it tries to mount | wear to a leg | foot.
The strength of the winding is adjusted by the living tissue (skin color, etc.) distal to the attachment site, or the measured pulse wave waveform detected by the probe.
Although the light emitting unit 1 and the light receiving unit 2 are fixed to the measuring element mounting unit, the wound mounting tape unit 30 is long enough to cover the back surface of the light emitting unit 1 and the light receiving unit 2. Separation of the light emitting unit 1 and the light receiving unit 2 can be prevented.
In addition, as a usage method, the mounting tape part 30 is used as a disposable, and the measuring element part 20 is reused, so that cost-effective use is possible.
[0030]
FIG. 6 is a diagram illustrating a second embodiment. In this embodiment, a planar fastener 40 is used to attach the light emitting unit 1 and the light receiving unit 2 to the mounting tape unit 30 in the probe of the first embodiment. That is, the hook part 40A of the planar fastener 40 is attached to the surface of the adhesive double-sided tape 8 on the cover tape 9 side, and the loop part 40B of the planar fastener 40 is attached to the surfaces of the light emitting part 1 and the light receiving part 2. .
[0031]
Here, the structure of the light-emitting unit 1 or the light-receiving unit 2 is shown in the sectional view of FIG. 7, and the appearance is shown in FIG. As shown in these drawings, the light emitting element or the light receiving element 41 is covered with two sheets. That is, the side having the light transmission surface is covered with a transparent sheet 42, and the opposite side is covered with a light-shielding sheet 44. As these sheets 42 and 44, for example, vinyl chloride sheets are used, and their periphery is bonded by high frequency welding. Moreover, the loop part 40B of the planar fastener 40 is affixed on the whole outer surface of these two sheets 42 and 44. The light emitting surface or light receiving surface 41a of the light emitting element or light receiving element 41 is provided with a window portion 43 in the loop portion 40B so as not to block light. Other configurations of this probe are the same as those of the above-described embodiment.
[0032]
Since the probe uses the planar fastener 40 as described above, even if the light emitting unit 1 and the light receiving unit 2 are repeatedly attached to and detached from the mounting tape unit 30, the attachment and detachment can be performed reliably.
As described above, in the present embodiment, the loop portion 40B is provided on the surface of the light emitting portion 1 and the light receiving portion 2, and the hook portion 40A is provided on the mounting tape 30 side. However, the hook portion 40A and the loop portion 40B are reversed. May be. However, since the loop portion 40B has a better feel, it is preferable for the operator to provide the loop portion 40B on the light emitting portion 1 and the light receiving portion 2 that the operator often touches.
[0033]
FIG. 9 is a diagram illustrating a third embodiment. In this embodiment, in the probe of the first embodiment, the holes 13A and 14A provided in the cover tape 9 are arranged so that the major axis directions thereof are 60 ° to 120 ° with respect to each other. That is, the adhesive surface exposed from the cover tape 9 of the double-sided tape 8 emits light when the mounting tape portion 30 is flat and the light-emitting portion and the light-receiving portion are attached to the double-sided tape 8 in a predetermined state. The direction of the base end part of each lead wire of each of the part 1 and the light receiving part 2 is formed and arranged so as to form an angle of 60 ° to 120 °. Other configurations are the same as those of the first embodiment.
With this configuration, the probe is attached to a patient and attached to the adhesive surface of the double-sided tape 8 that emerges from the holes 13A and 14A so that the light emitting unit 1 and the light receiving unit 2 are best adhered, that is, adheres. When the surface is attached in the largest state, as shown in FIG. 10, the base end portions L1 and L2 of the lead wires of the light emitting unit 1 and the light receiving unit 2 are easy to be pulled out, and this probe can be easily attached. It becomes. FIG. 10 shows how the probe is attached to the patient's foot.
[0034]
In the third embodiment, in the first embodiment, the holes 13A and 14A provided in the cover tape 9 are arranged so that the major axis directions thereof are 60 ° to 120 ° with respect to each other. In the second embodiment, the holes 13A and 14A similarly provided in the cover tape 9 may be arranged so that the major axis directions thereof are 60 ° to 120 ° with respect to each other. In this case, the lead wire can be easily pulled out, and the reliability of attaching and detaching the light emitting unit 1 and the light receiving unit 2 is improved.
[0035]
FIG. 11 is a diagram showing a fourth embodiment. In this embodiment, in the third embodiment, the holes 13B and 14B are formed from the side surfaces of the sponge 5 that come into contact with the living body by two light-transmitting sheets 15 and 15 (surgical tape, film, etc. are preferable). Seal.
The sealing of the permeable sheet 15 prevents the possibility that the portion of the living tissue where the edge portions of the holes 13B and 14B provided in the sponge 5 are in contact with each other due to excessive compression when the probe is attached to the living tissue. Because.
Examples of suitable materials for the light transmissive sheet 15 include polyurethane elastomer having a thickness of about 0.3 to 0.4 mm. An adhesive may be thinly applied to one side of the light transmissive sheet 15 and sealed on the sponge 5.
FIG. 12 is a sectional view thereof. As shown in FIG. 12, the holes 13 and 14 are sheeted by the light transmissive sheet 15.
[0036]
The light-transmitting sheet 15 does not have to be divided into two parts. As shown in FIG. 13, the light-transmitting sheet 15 has one size sufficient to seal the holes 13B and 14B provided in the sponge 5 at the same time. It may be a thing.
[0037]
FIG. 14 is a diagram showing a fifth embodiment. This embodiment is characterized in that, in the third embodiment, the holes 13B and 14B are not provided, and instead, the sponge 5 is thinned and has light permeability due to the porosity of the sponge 5. Is.
This is also to prevent the sponge 5 from forming the edge of the hole, as in the fourth embodiment.
An example of a suitable material for the sponge 5 is a flexible urethane foam. As for the porosity of the sponge, it is sufficient that about 50 to 60 holes (cells) are provided in 25 mm in order to impart light permeability.
In addition, the thickness of the sponge 5 at least at a portion through which light is transmitted is preferably about 1 to 2 mm. The other portions of the sponge 5 may have the same thickness of about 1 to 2 mm, or may be thicker than that.
FIG. 15 is a sectional view thereof. As shown in FIG. 15, the thickness of the portion of the sponge 5 through which light is transmitted is thin.
With this configuration, when the probe is mounted and measured, the portion of the sponge 5 through which the light emitted from the light emitting unit 1 passes through the living tissue and reaches the light receiving unit 2 is at least light. It will have transparency.
[0038]
In the above first to fifth embodiments, at least the surface that contacts the mounting tape 9 of the light emitting unit 1 and the light receiving unit 2 is a pile ground such as a planar fastener except for a portion through which light passes. The surface of the adhesive double-sided tape 8 on the cover tape 9 side may not be provided with a planar fastener. In this case, the peel strength of the light-emitting portion 1 and the light-receiving portion 2 from the tape 8 exposed from the mounting tape 9 is weaker than both are planar fasteners. Therefore, the light emitting unit 1 and the light receiving unit 2 can be peeled from the mounting tape 9 with a light and appropriate force.
[0039]
【The invention's effect】
As described in detail above, the invention of the pulse photometry probe according to claim 1
A light emitting unit for emitting light to a living tissue;
A light receiving unit for receiving light emitted from the light emitting unit and transmitted through the living tissue;
A mounting tape unit having the compressibility for winding and mounting on the living tissue, wherein the light emitting unit and the light receiving unit are attached;
A fastening portion for maintaining the state where the mounting tape portion is wound around and attached to the living tissue;
The mounting tape portion includes a first hole for allowing light emitted from the light emitting portion to pass through, and a second hole for allowing light received by the light emitting portion and transmitted through the living tissue to be received by the light receiving portion. Have holes,
The light emitting part is detachably attached on the surface of the mounting tape part that does not come into contact with the living tissue so as to transmit light emitted through the first hole.
In the pulse photometry probe, wherein the light receiving unit receives light from the second hole and is detachably attached to the surface of the mounting tape unit that does not contact the living tissue ,
The mounting tape part has a tape for attaching the light emitting part and the light receiving part detachably to the position where the light emitting part and the light receiving part are attached,
The tape has a base end of a lead wire of each of the light emitting portion and the light receiving portion when the mounting tape portion is flat and the light emitting portion and the light receiving portion are attached to the tape in a predetermined state. The portions are formed and arranged so that the directions of the portions form an angle of 60 ° to 120 ° with respect to each other .
As a result, since the surface of the mounting tape portion that contacts the living tissue does not have an adhesive layer, no matter how many times the probe is attached to or detached from the living tissue, the mounting force does not decrease due to contact with the living tissue. In addition, since the light emitting unit and the light receiving unit do not directly contact the living tissue, and the mounting tape unit has compressibility, local pressure on the living tissue can be prevented and the pressure can be dispersed under the mounted state.
Further, when the probe is attached to a subject, the lead wires of the light emitting unit and the light receiving unit can be easily pulled out.
[0050]
Furthermore, the invention of the pulse photometry probe according to claim 2 comprises:
The hook portion or loop portion of the planar fastener that is affixed to the mounting tape has the mounting tape portion in a flat state, and the light emitting portion and the light receiving portion are disposed on the hook portion or loop portion of the planar fastener. When the light emitting unit and the light receiving unit are attached to each other in a predetermined state, the directions of the base ends of the lead wires of the light emitting unit and the light receiving unit are formed and arranged so as to form an angle of 60 ° to 120 ° with each other. To do.
Thereby, when this probe is attached to the subject, the lead wires of the light emitting unit and the light receiving unit can be easily pulled out.
[0051]
Furthermore, the invention of the pulse photometry probe according to claim 3
The compressible member is a sponge.
As a result, since the sponge is in contact with the living tissue, no matter how many times the probe is attached to or detached from the living tissue, the mounting force does not decrease due to contact with the living tissue.
In addition, the compressibility of the sponge makes it possible to prevent local pressure on the living tissue under the wearing state.
[0052]
Furthermore, the invention of the pulse photometry probe according to claim 4 is:
The first hole and the second hole are sealed with a light-transmitting sheet from the surface of the mounting tape portion that comes into contact with the living tissue.
As a result, when the probe is mounted on the living tissue, it is possible to prevent the living tissue portion that contacts the edge portion of the hole provided in the mounting tape portion from being necrotized due to excessive pressure.
[0053]
Furthermore, the invention of the pulse photometry probe according to claim 5 is:
A light emitting unit for emitting light to a living tissue;
A light receiving unit for receiving light emitted from the light emitting unit and transmitted through the living tissue;
A mounting tape unit having the compressibility for winding and mounting on the living tissue, wherein the light emitting unit and the light receiving unit are attached;
A fastening portion for maintaining the state where the mounting tape portion is wound around and attached to the living tissue;
The mounting tape part is composed of a compressible member and a cover tape having an adhesive surface on one side,
The adhesive surface of the cover tape includes a surface that adheres to the compression member, and a surface that becomes the fastening portion by being attached to a surface that does not contact the living tissue of the attachment tape portion,
The cover tape has a first hole for passing light emitted from the light emitting part and a second hole for receiving light emitted by the light emitting part and transmitted through the living tissue and received by the light receiving part. Have
The light emitting part is detachably attached to a surface of the cover tape that does not adhere to the compressible member so as to transmit light emitted through the first hole,
The light receiving portion is removably attached on the surface of the cover tape that is not bonded to the compressible member so as to receive light from the second hole,
The portion of the compressible member through which the light emitted from the light emitting part passes through the living tissue and reaches the light receiving part is at least light transmissive.
As a result, when the probe is attached to the living tissue, it is possible to prevent the portion of the living tissue that contacts the edge portion of the hole provided in the mounting tape portion from being necrotized due to excessive compression, and to reduce the number of parts of the probe. Can be reduced.
[0054]
Furthermore, the invention of the pulse photometry probe according to claim 6 comprises:
In the configuration of claim 5 ,
The mounting tape portion has an adhesive surface for attaching the light emitting portion and the light receiving portion, and at least a surface attached to the adhesive surface of the light emitting portion and the light receiving portion is a pile ground.
Thereby, a light emission part and a light-receiving part can be peeled from a mounting tape part with moderate light force.
[Brief description of the drawings]
FIG. 1 is a diagram showing an external appearance of a pulse photometry probe according to a first embodiment.
FIG. 2 is an exploded view of a mounting tape portion of the pulse photometry probe according to the first embodiment.
FIG. 3 is a cross-sectional view of a mounting tape portion of the pulse photometry probe according to the first embodiment.
FIG. 4 is a diagram showing a state in which the pulse photometry probe according to the first embodiment is attached to a finger.
FIG. 5 is a diagram showing a state in which the pulse photometry probe according to the first embodiment is attached to a foot.
FIG. 6 is an exploded view of a pulse photometry probe according to a second embodiment.
7 is a cross-sectional view of a light emitting unit or a light receiving unit of a pulse photometry probe according to a second embodiment. FIG.
FIG. 8 is a diagram illustrating an appearance of a light emitting unit or a light receiving unit of a pulse photometry probe according to a second embodiment.
FIG. 9 is an exploded view of a pulse photometry probe according to a third embodiment.
FIG. 10 is a diagram showing a state in which a pulse photometry probe according to a third embodiment is attached to a foot.
FIG. 11 is an exploded view of a pulse photometry probe according to a fourth embodiment.
12 is a cross-sectional view of a mounting tape portion of a pulse photometry probe according to a fourth embodiment. FIG.
FIG. 13 is an exploded view of another pulse photometry probe according to the fourth embodiment.
FIG. 14 is an exploded view of a pulse photometry probe according to a fifth embodiment.
FIG. 15 is a cross-sectional view of a mounting tape portion of a pulse photometry probe according to a fifth embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Light emission part 2 Light reception part 3 Y-shaped cable 4 Connector 5, 5B Sponge 6 Plate 7 Double-sided tape 8 Double-sided tape 9 Cover tape 10 Adhesion surface 11 Release paper 12 Release paper 13 1st hole 14 2nd hole 15 Light transmittance Sheet 20 Measuring element unit 30 Mounting tape unit 40 Planar fastener

Claims

A light emitting unit for emitting light to a living tissue;
A light receiving unit for receiving light emitted from the light emitting unit and transmitted through the living tissue;
A mounting tape unit having the compressibility for winding and mounting on the living tissue, wherein the light emitting unit and the light receiving unit are attached;
A fastening portion for maintaining the state where the mounting tape portion is wound around and attached to the living tissue;
The mounting tape portion includes a first hole for allowing light emitted from the light emitting portion to pass through, and a second hole for allowing light received by the light emitting portion and transmitted through the living tissue to be received by the light receiving portion. Have holes,
The light emitting part is detachably attached on the surface of the mounting tape part that does not come into contact with the living tissue so as to transmit light emitted through the first hole.
In the pulse photometry probe, wherein the light receiving unit receives light from the second hole and is detachably attached to the surface of the mounting tape unit that does not contact the living tissue ,
The mounting tape part has a tape for attaching the light emitting part and the light receiving part detachably to the position where the light emitting part and the light receiving part are attached,
The tape has a base end of a lead wire of each of the light emitting portion and the light receiving portion when the mounting tape portion is flat and the light emitting portion and the light receiving portion are attached to the tape in a predetermined state. A pulse photometry probe characterized by being formed and arranged so that the directions of the portions form an angle of 60 ° to 120 ° with each other .

A light emitting unit for emitting light to a living tissue;
A light receiving unit for receiving light emitted from the light emitting unit and transmitted through the living tissue;
A mounting tape unit having the compressibility for winding and mounting on the living tissue, wherein the light emitting unit and the light receiving unit are attached;
A fastening portion for maintaining the state where the mounting tape portion is wound around and attached to the living tissue;
The mounting tape portion includes a first hole for allowing light emitted from the light emitting portion to pass through, and a second hole for allowing light received by the light emitting portion and transmitted through the living tissue to be received by the light receiving portion. Have holes,
The light emitting part is detachably attached on the surface of the mounting tape part that does not come into contact with the living tissue so as to transmit light emitted through the first hole.
In the pulse photometry probe, wherein the light receiving unit receives light from the second hole and is detachably attached to the surface of the mounting tape unit that does not contact the living tissue ,
The mounting tape portion is provided with a hook portion or a loop portion of a planar fastener at a position where the light emitting portion and the light receiving portion are attached, and at least a surface of the light emitting portion and the light receiving portion attached to the mounting tape portion. Is provided with a loop portion or a hook portion of the planar fastener,
The hook portion or loop portion of the planar fastener that is affixed to the mounting tape has the mounting tape portion in a flat state, and the light emitting portion and the light receiving portion are disposed on the hook portion or loop portion of the planar fastener. When the light emitting unit and the light receiving unit are attached to each other in a predetermined state, the directions of the base ends of the lead wires of the light emitting unit and the light receiving unit are formed and arranged so as to form an angle of 60 ° to 120 ° with each other. Pulse photometry probe.

A light emitting unit for emitting light to a living tissue;
A light receiving unit for receiving light emitted from the light emitting unit and transmitted through the living tissue;
A mounting tape unit having the compressibility for winding and mounting on the living tissue, wherein the light emitting unit and the light receiving unit are attached;
A fastening portion for maintaining the state where the mounting tape portion is wound around and attached to the living tissue;
The mounting tape portion includes a first hole for allowing light emitted from the light emitting portion to pass through, and a second hole for allowing light received by the light emitting portion and transmitted through the living tissue to be received by the light receiving portion. Have holes,
The light emitting part is detachably attached on the surface of the mounting tape part that does not come into contact with the living tissue so as to transmit light emitted through the first hole.
In the pulse photometry probe, wherein the light receiving unit receives light from the second hole and is detachably attached to the surface of the mounting tape unit that does not contact the living tissue ,
The mounting tape portion is composed of a compressible member and a cover tape having an adhesive surface on one side,
The adhesive surface of the cover tape has a surface that adheres to the compression member, and a surface that becomes the fastening portion by adhering to a surface that does not contact the living tissue of the mounting tape portion,
The pulse photometry probe according to claim 1 , wherein the compressible member is a sponge .

A light emitting unit for emitting light to a living tissue;
A light receiving unit for receiving light emitted from the light emitting unit and transmitted through the living tissue;
A mounting tape unit having the compressibility for winding and mounting on the living tissue, wherein the light emitting unit and the light receiving unit are attached;
A fastening portion for maintaining the state where the mounting tape portion is wound around and attached to the living tissue;
The mounting tape portion includes a first hole for allowing light emitted from the light emitting portion to pass through, and a second hole for allowing light received by the light emitting portion and transmitted through the living tissue to be received by the light receiving portion. Have holes,
The light emitting part is detachably attached on the surface of the mounting tape part that does not come into contact with the living tissue so as to transmit light emitted through the first hole.
In the pulse photometry probe, wherein the light receiving unit receives light from the second hole and is detachably attached to the surface of the mounting tape unit that does not contact the living tissue ,
The pulse photometry probe characterized in that the first hole and the second hole are sealed with a light-transmitting sheet from the surface of the mounting tape portion that contacts the living tissue .

A light emitting unit for emitting light to a living tissue;
A light receiving unit for receiving light emitted from the light emitting unit and transmitted through the living tissue;
A mounting tape unit having the compressibility for winding and mounting on the living tissue, wherein the light emitting unit and the light receiving unit are attached;
A fastening portion for maintaining the state where the mounting tape portion is wound around and attached to the living tissue;
The mounting tape part is composed of a compressible member and a cover tape having an adhesive surface on one side,
The adhesive surface of the cover tape includes a surface that adheres to the compression member, and a surface that becomes the fastening portion by being attached to a surface that does not contact the living tissue of the attachment tape portion,
The cover tape has a first hole for passing light emitted from the light emitting part and a second hole for receiving light emitted by the light emitting part and transmitted through the living tissue and received by the light receiving part. Have
The light emitting part is detachably attached to a surface of the cover tape that does not adhere to the compressible member so as to transmit light emitted through the first hole,
The light receiving portion is removably attached on the surface of the cover tape that is not bonded to the compressible member so as to receive light from the second hole,
The pulse photometry probe characterized in that at least a portion of the compressible member through which the light emitted from the light emitting part passes through the living tissue and reaches the light receiving part is light transmissive.

The pulse photometry probe according to claim 5 ,
The mounting tape portion has an adhesive surface for attaching the light emitting portion and the light receiving portion, and at least a surface attached to the adhesive surface of the light emitting portion and the light receiving portion is a pile ground. Photometry probe.